Question

Im dying, someone help with this problem ;)

Answer 1

Answer is b

24x2+25x−47=−8ax2−3ax+16x−47
-3 at the end for a
i know my stuff :)

Answer 2

24x2+ 25x − 47 divided by ax − 2 is equal to  

−8x −3 with remainder −53, it is true that (−8x − 3)(ax − 2) − 53 = 24x2 +25x −47. (This can be seen by multiplying each side of the given equation by 
ax − 2). This can be rewritten as −8ax2+ 16x − 3ax = 24x2+ 25x − 47.
Since  the coefficients of the x2 -term have to be equal on both sides of the equation,  

−8a = 24, or a = −3.